Xserve RAID Card
Xserve RAID Card
The Xserve RAID Card delivers enhanced storage performance and data protection through a powerful hardware RAID engine, 256MB of cache, and an integrated 72-hour battery for protecting cache data. The card requires Mac OS X Server v10.5 or later and replaces the built-in SATA/SAS controller board in your Xserve (late 2006 or early 2008).
Enhance storage performance and data protection by configuring your system with the Xserve RAID Card and multiple SAS or SATA hard drives. The Xserve RAID Card replaces the built-in SATA/SAS controller board and does not use a PCI Express slot. Please note that your Xserve must have either all SATA or all SAS drives in drive bays 1 through 3.
Coupled with two or more hard drives, the Xserve RAID Card offers improved performance and data protection to your Xserve system — up to 318MB/s in RAID 0 and 198MB/s in RAID 5 of sequential read performance. This hardware RAID option supports RAID levels 0, 1, 5, and Enhanced JBOD and has 256MB of cache. It features an integrated 72-hour battery backup for protecting the RAID cache. The card replaces the built-in SATA/SAS controller and does not use a PCI Express slot.
To enable your Xserve for hardware RAID, install the Xserve RAID card and two or more drives of the same type in bays 1 through 3. Each RAID level has minimum requirements for the number of hard drives:
|RAID Level||Drive Requirements||Benefit|
|Enhanced JBOD||One drive||Single boot drive|
|RAID 0 (striping)||Two or three hard drives||Maximum performance and capacity for the most demanding I/O requirements|
|RAID 1 (mirroring)||Two hard drives||Maximum protection for critical data|
|RAID 5||Three hard drives||Protection and performance; ability to survive a single disk failure; efficient capacity utilization|
The Xserve RAID Card supports the creation of multiple RAID sets in a system and multiple volumes per RAID set. For optimal disk utilization in a RAID set, all hard drives should be the same size and must be the same type (SATA or SAS). Using Apple's RAID Utility software (included with Mac OS X Server v10.5), you can migrate the boot drive into a RAID set without reinstalling or reformatting the drive, and you can customize your RAID volumes to meet your exact requirements.
- Requires Xserve (Late 2006) or Xserve (Early 2008)
Ratings & Reviews
Easy to install and easy to setup
I am pretty new to servers but found it very easy to install the RAID card in my Xserve. Took about 15 minutes, fired the server b I am pretty new to servers but found it very easy to install the RAID card in my Xserve. Took about 15 minutes, fired the server back up and the RAID utility was simple to setup. Very good product. …
- Written by Scott C from Coeur D Alene
nothing but pain.
I purchased one of these about 18mnths ago and after installing it we had repeated problems with drives staying assigned to their I purchased one of these about 18mnths ago and after installing it we had repeated problems with drives staying assigned to their raid sets.
For ages we though it was the drive sleds themselves. We even returned and purchased new drive sleds. This appeared to fix the problem.
However months later it came back. So we replaced some of the drives themselves. Again, this appear to fix the problem.
After a few months later the server would suddenly lock up and restart. Upon reboot it would report another drive failure and you'd reboot again only to find the drive was in fact fine but was now 'roaming' and not 'assigned' to it's raid set.
Finally we removed the raid card and restored the factory installed card that gave us three separate drives. All our problems went away. …
- Written by Campbell M from Wellington
It performed like a champ!
Same here. It worked like a charm. The overhead of running a level 5 RAID was easily offset by this card and it performed like a c Same here. It worked like a charm. The overhead of running a level 5 RAID was easily offset by this card and it performed like a champ. …
- Written by James S from Oswego
12 of 12 people found this useful
Questions & Answers
Answers from the community
Where can I buy a replacement battery for this RAID card?
- Asked by Jonathan W R from Schaumburg